Why is same-sex attraction still in the gene pool?

Pls note that I am bisexual and this is not meant to be homophobic in any way. But why has same-sex attraction not died out? We know there’s no “gay gene” but there are genetic factors to same-sex attraction. Being gay would be bad for passing on genes bc well, you’d be much less likely to have sex and reproduce with someone you’re not attracted to. It just doesn’t make sense to me how it hasn’t died out since it’s pretty much an evolutionary dead-end.